Here we go again........ post some ****ing proof, and not a random screenshot from Facebook of some random dude with some random mods to his car saying they did nothing, post some ****ing dyno results something. Just saying they do nothing means absolutely dick. I honestly do not understand how headers can do nothing on a platform that it is a well known fact that the stock front manifold is very restrictive.
I look at it this way, when you breath what is easier, breathing through your mouth, through your nose or through one nostril?
Btw my fathers former college roommates cousin was able to triple his horsepower by adding headers........................